行业组件数据 · 2026

支撑材料

High-temperature ceramic or metallic support material for Diesel Oxidation Catalyst (DOC) substrates

技术定义与适配语境
典型 支撑材料 会按材料、尺寸公差、适配关系和失效风险在 汽车制造 中评估。

A specialized structural material used to support and stabilize the catalyst substrate within a Diesel Oxidation Catalyst (DOC) system. It provides mechanical integrity, thermal stability, and proper gas flow distribution while withstanding harsh exhaust conditions including high temperatures, thermal cycling, and chemical exposure.

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组件规格

定义
A specialized structural material used to support and stabilize the catalyst substrate within a Diesel Oxidation Catalyst (DOC) system. It provides mechanical integrity, thermal stability, and proper gas flow distribution while withstanding harsh exhaust conditions including high temperatures, thermal cycling, and chemical exposure.
工作原理
Provides physical support and thermal management for the catalyst substrate, ensuring uniform exhaust gas distribution across the catalytic surface while maintaining structural integrity under thermal expansion and vibration. The material's porosity and thermal conductivity help manage heat distribution and prevent localized overheating.
材料
Typically cordierite (2MgO·2Al₂O₃·5SiO₂) ceramic or metallic alloys (stainless steelFeCrAl). Ceramic versions offer excellent thermal shock resistancewhile metallic versions provide higher mechanical strength and thermal conductivity.
Porosity
30-40% (ceramic), controlled cell structure (metallic)
Cell Density
200-600 cells per square inch (cpsi)
Temperature Range
Up to 1000°C continuous, 1200°C peak
Compressive Strength
>10 MPa (ceramic), >20 MPa (metallic)
Thermal Conductivity
1-2 W/m·K (ceramic), 15-25 W/m·K (metallic)
Thermal Expansion Coefficient
0.5-1.5 × 10⁻⁶/K (ceramic), 10-15 × 10⁻⁶/K (metallic)
标准
ISO 13317ISO 18754DIN EN 623-2DIN 51045

行业分类与别名

支撑材料 的常用贸易名称、技术标识和检索关键词。

DOC support materialcatalyst substrate supportceramic supportmetallic catalyst supportexhaust system materialsthermal management materials支撑材料Mat/Support Material汽车制造 支撑材料

上级产品

该组件会出现在以下整机或工业产品中。

柴油氧化催化器（DOC）
一种尾气后处理装置，通过氧化柴油尾气中的一氧化碳（CO）和碳氢化合物（HC）来降低排放。
查看产品详情 ->

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Thermal stress from rapid temperature cycling->Cracking or structural failure of support material->Use materials with low thermal expansion coefficients, implement gradual warm-up protocols, and design for thermal stress relief
Chemical attack from sulfur compounds or other exhaust contaminants->Material degradation and loss of structural integrity->Select chemically resistant materials, implement protective coatings, and maintain proper exhaust temperature control
Mechanical vibration and shock->Fracture or displacement of support structure->Optimize mounting systems, use vibration dampening materials, and ensure proper mechanical fastening

工业生态与工程逻辑

兼容对象
Diesel Oxidation Catalyst systemsDiesel Particulate Filter systemsSelective Catalytic Reduction systems
可替换件
CorningNGKIBIDENEmitecUnifrax
0
Thermal cracking under rapid temperature changes
1
Chemical degradation from exhaust contaminants
2
Mechanical failure due to vibration and thermal cycling
3
Flow maldistribution leading to uneven catalyst utilization

合规与检测

tolerance
Dimensional tolerance ±0.5mm, flatness tolerance 0.1mm per 100mm, thermal expansion tolerance ±5% of specification
test method
ISO 13317 for thermal shock resistance, DIN EN 623-2 for mechanical properties, ISO 18754 for thermal expansion measurement

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采购评估维度

不是客户评论，也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例，不代表真实客户评分、具体国家买家反馈或实时询盘。

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常见问题

What is the primary function of DOC support material?

To provide mechanical support and thermal stability for the catalyst substrate, ensuring proper exhaust gas distribution and maintaining structural integrity under extreme operating conditions.

What are the main differences between ceramic and metallic support materials?

Ceramic materials (like cordierite) offer superior thermal shock resistance and lower thermal expansion, while metallic materials provide higher mechanical strength, better thermal conductivity, and faster light-off characteristics.

How does support material affect DOC performance?

Proper support material selection influences heat distribution, pressure drop, mechanical durability, and overall catalyst efficiency by maintaining substrate integrity and optimizing exhaust flow patterns.

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